CN214222177U

CN214222177U - Electromagnetic valve

Info

Publication number: CN214222177U
Application number: CN202120176442.7U
Authority: CN
Inventors: 郭国武; 范志伟
Original assignee: Longquan Huifeng Import And Export Co ltd
Current assignee: Longquan Huifeng Import And Export Co ltd
Priority date: 2021-01-22
Filing date: 2021-01-22
Publication date: 2021-09-17
Anticipated expiration: 2031-01-22

Abstract

The utility model provides a solenoid valve, which comprises a valve body, a valve cover component and a coil assembly, wherein the valve cover component and the coil assembly are arranged on the valve body; the valve gap subassembly includes valve gap, case, reset spring, sleeve pipe, head, fixed armature, needle, pressure spring, rivet, annular blotter, the case is including the guiding hole that sets up first step, the needle includes the second step, the needle passes the guiding hole of case, pressure spring one end butt needle terminal surface, other end butt rivet, rivet and case fixed connection to fixed annular blotter. Through annular blotter, reduced the striking noise between case and the head.

Description

Electromagnetic valve

Technical Field

The utility model relates to an air conditioner technical field's solenoid valve, concretely relates to technique of making an uproar falls in solenoid valve.

Background

The utility model application of CN207598940U provides a solenoid valve, which comprises a valve body, and a valve cover assembly, a piston component and an electromagnetic driving mechanism which are arranged on the valve body, wherein the valve body is provided with a liquid inlet channel, a liquid outlet channel and a valve cavity communicated with the liquid inlet channel, the valve cavity is provided with a main valve port communicated with the liquid outlet channel, the valve cover assembly comprises a valve cover and a valve core axially moving relative to the valve cover, the bottom of the valve cover is positioned in the valve cavity, the bottom of the valve cover is provided with a cavity for accommodating the piston component, and the electromagnetic driving mechanism drives the valve core to move so as to push the piston component to close the main valve port; the valve cover component comprises a valve cover, a valve core, a reset spring, a sleeve, an end socket, a fixed armature, a valve needle and a compression spring. When the power is on, the valve core of the electromagnetic valve drives the piston component to move downwards to close the valve port, and when the power is off, the valve core moves upwards to impact the seal head, so that the noise is high.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a solenoid valve solves the case relatively big problem of noise when upward movement striking head.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the valve comprises a valve body, a valve cover assembly and a coil assembly, wherein the valve cover assembly and the coil assembly are installed on the valve body, a liquid inlet channel, a liquid outlet channel and a valve cavity communicated with the liquid inlet channel are arranged on the valve body, a main valve port communicated with the liquid outlet channel is arranged on the valve cavity, the valve cover assembly comprises a valve cover and a valve core axially moving relative to the valve cover, and the bottom of the valve cover is located in the valve cavity; valve gap subassembly includes valve gap, case, reset spring, sleeve pipe, head, fixed armature, and needle, pressure spring, rivet, annular blotter are equipped with axial through hole on the fixed armature, and the needle runs through axial through hole, reset spring suit are on the needle, and reset spring's bottom offsets with fixed armature diapire, and the top offsets its characterized in that with the case terminal surface: the valve core comprises a guide hole provided with a first step, the valve needle comprises a second step, the valve needle penetrates through the guide hole of the valve core, the first step and the second step are abutted, one end of the compression spring is abutted to the end face of the valve needle, the other end of the compression spring is abutted to the rivet, and the rivet is fixedly connected with the valve core and fixes the annular cushion pad.

Further, the rivet is annular.

Furthermore, the end face of the annular cushion pad, which is in contact with the end socket, is higher than the end face of the rivet.

Further, the annular buffer pad is provided with a third step, and the rivet is provided with a corresponding fourth step for pressing the annular buffer pad.

Further, the annular buffer cushion is made of plastic or rubber.

Furthermore, the valve core further comprises a mounting hole provided with a fifth step, and the annular buffer pad is assembled in the mounting hole and limited by the fifth step.

Further, the solenoid valve also comprises a piston component, the piston component is arranged in a cavity at the bottom of the valve cover or a valve cavity of the valve body, and the coil assembly drives the valve core to move so as to push the piston component to open or close the main valve port.

The beneficial effects of the utility model, through annular blotter, reduced the striking noise between case and the head.

Drawings

FIG. 1 is a schematic view of an open state of a solenoid valve;

FIG. 2 is a schematic view of a closed state of the solenoid valve;

fig. 3 is a schematic view of a second embodiment of a solenoid valve spool.

The valve comprises a valve body 1, a liquid inlet channel 2, a liquid outlet channel 3, a valve cavity 4, a main valve port 5, a sixth step 6, a screw 7, an eighth step 8, a valve cover component 10, a valve cover 11, a seventh step 112, a ninth step 113, a valve core 12, a valve needle 121, a second step 1211, a compression spring 122, a rivet 123, a fourth step 1231, an annular buffer 124, a third step 1241, a guide hole 125, a first step 1251, an installation hole 126, a fifth step 1261, a return spring 13, a sleeve 14, a seal head 15, a fixed armature 16, a positioning step hole 161, a piston component 20, a piston 21, a spring 22, a coil assembly 30, a magnetic conduction frame 31, a coil frame 32, a coil 33 and a plastic sealing layer 34

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the following detailed description is made with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 and 2, the electromagnetic valve includes a valve body 1, a valve cover assembly 10, a piston member 20 and a coil assembly 30, the valve body 1 includes a liquid inlet passage 2, a liquid outlet passage 3 and a valve cavity 4, the valve cavity 4 is communicated with the liquid inlet passage 2, and a main valve port 5 communicated with the liquid outlet passage 3 is arranged on the bottom wall of the valve cavity 4.

The valve cover assembly 10 comprises a valve cover 11, a valve core 12, a return spring 13, a sleeve 14, an end socket 15, a fixed armature 16, a valve needle 121, a pressing spring 122, a rivet 123 and an annular cushion 124, wherein an axial through hole is formed in the fixed armature 16, the valve needle 121 penetrates through the axial through hole, the axial through hole of the fixed armature 16 comprises a positioning step hole 161, the return spring 13 is sleeved on the valve needle 121, the bottom end of the return spring 13 abuts against the bottom wall of the positioning step hole 161, the top end of the return spring abuts against the end face of the valve core 12, so that the return spring 13 is clamped between the bottom wall of the positioning step hole 161 and the end face of the valve core 12, and under the supporting action of the return spring 13, a movable gap exists. The valve cover 11 is fixed with the bottom of the sleeve 14 in a welding mode, the fixed armature 16 is fixed with the bottom of the sleeve 14 in a welding mode, and the seal head 15 is fixed with the top of the sleeve 14 in a welding mode. The valve cover 11 can also be designed as one piece with the fixed armature 16, as in the background art. The valve core 12 comprises a guide hole 125 provided with a first step 1251, the valve needle 121 comprises a second step 1211, the valve needle 12 penetrates through the guide hole 125 of the valve core, the first step 1251 abuts against the second step 1211, one end of the pressure spring 122 abuts against the end surface of the valve needle, the other end abuts against the rivet 123, and the rivet 123 is fixedly connected with the valve core 12 through interference fit and fixes the annular cushion 124. The rivet is in a hollow circular ring shape, and is beneficial to the flowing of working medium when the valve core moves up and down. When the power is on, the valve core of the electromagnetic valve drives the piston part to move downwards to close the valve port, and when the power is off, the electromagnetic valve is opened from the closed state. In figure 2, the solenoid valve is in the open mode, and the terminal surface of annular blotter and head contact one end is higher than the rivet terminal surface, because annular blotter is plastics or rubber materials, when the outage, at the solenoid valve by closing to open mode, only annular blotter striking head, consequently striking noise is less.

In fig. 1 and 2, the annular cushion is provided with a third step 1241, and the rivet 123 is provided with a corresponding fourth step 1231 to press against the annular cushion 124. The valve cartridge includes a mounting bore 126 provided with a fifth step 1261, and the annular cushion 124 fits into the mounting bore and is retained by the fifth step 1261. The annular cushion 124 is not easily deformed to affect the stroke of the valve core by the limitation of the periphery of the mounting hole 126. Fig. 3 shows another embodiment of the valve cartridge, the main difference is that compared to fig. 1 and 2, the annular cushion 124 has no limitation on its outer circumference, and its outer diameter is close to the outer diameter of the valve cartridge.

The coil assembly 30 comprises a magnetic conduction frame 31, a coil framework 32, a coil 33 and a plastic package layer 34, the magnetic conduction frame 31 and the plastic package layer 34 are subjected to plastic package, the magnetic conduction frame 31 is fixed outside the plastic package layer 34, the coil assembly 30 is arranged on the outer periphery side of the sleeve 14, and at least part of the valve cover component 10 is matched with the valve cavity 4. The magnetic conduction frame 31 is U-shaped, mounting holes are formed in two sides of the bottom of the magnetic conduction frame 31, and the valve body 1 is correspondingly provided with screw holes and connected through screws 7.

The valve body 1 and the valve cover 11 are screwed up through threads, the valve cavity 4 is provided with a sixth step 6, the valve cover 11 is provided with a corresponding seventh step 112, and the seventh step 112 is limited by the sixth step 6. The valve cavity 4 is provided with an eighth step 8, the valve cover 11 is provided with a corresponding ninth step 113, and the eighth step 8 and the ninth step 113 are matched to form an annular groove for placing a sealing ring.

The piston part 20 comprises a piston 21 and a spring 22, and is arranged in a cavity at the bottom of the valve cover 11, but can also be arranged in a valve cavity (not shown) of the valve body 1, and the coil assembly 30 moves by driving the valve core 12 to push the piston part 20 to close the main valve opening 5; similarly, a power-on opening scheme may be designed. In this embodiment, the valve element 12 controls the opening and closing of the main valve port 5 by the piston member 20, and is a pilot type solenoid valve mode, and the valve element 12 may directly control the opening and closing of the main valve port 5, that is, a direct type solenoid valve mode. It should be noted that the spring is not an essential part of the piston member, and the solenoid valve can normally operate without the spring.

It should be noted that: the above embodiments are only used for illustrating the present invention and not for limiting the technical solutions described in the present invention, and the expressions such as upper, lower, inner, outer, etc. appearing herein are only for the purpose of more clearly illustrating the technical solutions of the present invention, but not for limiting the technical solutions of the present invention. It should be understood by those skilled in the art that the present invention can be modified or substituted by equivalents, and all modifications and improvements without departing from the spirit and scope of the present invention should be covered by the claims of the present invention.

Claims

1. The electromagnetic valve comprises a valve body, a valve cover assembly and a coil assembly, wherein the valve cover assembly and the coil assembly are installed on the valve body, a liquid inlet channel, a liquid outlet channel and a valve cavity communicated with the liquid inlet channel are arranged on the valve body, a main valve port communicated with the liquid outlet channel is arranged on the valve cavity, the valve cover assembly comprises a valve cover and a valve core axially moving relative to the valve cover, and the bottom of the valve cover is located in the valve cavity; valve gap subassembly includes valve gap, case, reset spring, sleeve pipe, head, fixed armature, needle, pressure spring, rivet, annular blotter, is equipped with axial through hole on the fixed armature, and the needle runs through axial through hole, reset spring suit are on the needle, and reset spring's bottom offsets with fixed armature diapire, and the top offsets its characterized in that with the case terminal surface: the valve core comprises a guide hole provided with a first step, the valve needle comprises a second step, the valve needle penetrates through the guide hole of the valve core, the first step and the second step are abutted, one end of the compression spring is abutted to the end face of the valve needle, the other end of the compression spring is abutted to the rivet, and the rivet is fixedly connected with the valve core and fixes the annular cushion pad.

2. The solenoid valve according to claim 1, wherein: the rivet is circular.

3. The solenoid valve according to claim 1, wherein: the end face of the annular cushion pad, which is in contact with the end socket, is higher than the end face of the rivet.

4. A solenoid valve according to claim 1, 2 or 3, wherein: the annular buffer pad is provided with a third step, and the rivet is provided with a corresponding fourth step to compress the annular buffer pad.

5. A solenoid valve according to claim 1, 2 or 3, wherein: the annular buffer cushion is made of plastic or rubber.

6. A solenoid valve according to claim 1, 2 or 3, wherein: the valve core further comprises a mounting hole provided with a fifth step, and the annular buffer pad is assembled in the mounting hole and limited by the fifth step.

7. The solenoid valve according to claim 1, wherein: the solenoid valve also comprises a piston component, the piston component is arranged in a cavity at the bottom of the valve cover or a valve cavity of the valve body, and the coil assembly drives the valve core to move so as to push the piston component to open or close the main valve port.